Hand signal-lamp.



No, 732,941. PATENTED JULY 7, 1903. J. HOPSON & H. H. PRIEST.

HAND SIGNAL LAMP.

APPLICATION FILED D20. 20, 1901.

I0 KODEL.

to the accompanying drawings, in which+ 1 Wooloongabba,

mechanism that can UNITED STATES PATENT Patented July 1963.

OFFICE, I

JESSE HOPSON AND HENRY HAYWARD PRIEST, OF BRISBANE, QUEENSLAND, AUSTRALIA.

HAND SIGNAL-LAM P.

' SPECIFICATIGN forming part of Letters Il. at1=.-nt N 0. 732,941, dated July '7, 1903 Application filed Deceniber 26, 1901. Serial No. 87,396. (No model.)

To aZZ lull/0172, it may concern:

Be it known that we, JESSE HOPSON, principal messenger Queensland State Legislative Assembly, residing at Bristol street, West End,Brisbane,and HENRY HAYWARD PRIEST, electrical engineer, residing at Overend street, Brisbane, in the State of Queensland, Commonwealth of Australia, citizens of Australia, have invented new and useful Improvements in Hand Signal-Lamps; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to hand signal-lamps used on railways, tramways, &c., and has for its object the construction of simple screen be operated with one hand instead of having to use both hands as with the lamps at present in use.

The invention consists of a light metal cylindrical frame carrying improved red and green screens, said frame being suspended from a spindle in the head of the lamp and capable of being moved through an are large enough to expose the white, green, or red lights, being so actuated by a small pinion, quadrant, and lever on handle.

In order to clearly illustrate our invention, we will now describe it, reference being made Figure 1 is a side sectional elevation of an ordinary hand signal-lamp. Fig.- 2 is a part front sectional elevation.

The light metal frame consists of circular ends A A, connected together by three bars B, all of which are grooved to receive the col-.

. ored screens 0, which we make in the following manner! We take sheets of talc or mica of thedesired size, and between two ofthese we placethin sheetsof colored gelatin, such as is used by confectioners for bonbons, &c.,

These three sheets maybe cemented together or only at the edges; When dry, they may be put in place between the bars B and the ends A Asecured by rivets, solder, or otherwise. The red and green screen so formed is suspended by a metal bow A from a central post D, fastened to the head of the lamp, while secured to the bow and revoluble on the post D is a small pinion E, into which gears the segmental rack 'ing different-colored screens, a suspended from the roof of the lamp upon ,roof of the lamp,

and green.

The working of the lamp is as follows: When 'the lever J is in the central notch, the white light is shown, either through a colorless screen or merely through the opening in the frame. On moving the lever J to the right or left with the thumb or finger the screen is moved around and the red or green screen interposed between the light and the lamp glass, according to its position in the screen; It will of course be understood that slight variations in the manner of working the screen can readily be made, while a mechan ical equivalent may be substituted for the pinion and segmental rack. Havingnow particularly described and ascertained the nature of our said invention and in what manner the same is to be performed,

wedeclare that what we claim is- 1. In a signal-lamp a suitable frame carryvertical post which said frame is journaled, a gear-wheel rotating upon said post and connected with the frame, a rock-shaft horizontally disposed above the post with means for operating it and a rack of segmental shape carried by said vrock-shaft and engaging the gear-wheel, substantially as described.

2; In hand signal-lamps, a light metal frame suspended from a central fixed post in the and operated by apinion, segmental rack on an arbor and a small lever in front of the handle, in combination with colored screens formed by interposing between two thin sheets of talc or mica, colored gelatin or other film cemented together, carried in or secured together by thesaid light metal frame as herein described.

In testimony that we claimtheforegoing as our invention we have signed our names in the presence of two subscribing witnesses.

JESSE HOPSON. HENRY HAYWARD PRIEST.

' Witnesses:

ADOLPH FEEZ, CHARLES T. NEWELL. 

